
<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>

FINANCIAL DATA SCHEDULE

This schedule contains summary financial information extracted from Form 10-K
financial statements filed for the period ending December 31, 1995 and is
qualified in its entirety by reference to such financial statements.

</LEGEND>
<MULTIPLIER>1000
       
<S>                               <C>
<PERIOD-TYPE>                          12-MOS
<FISCAL-YEAR-END>                 DEC-31-1995
<PERIOD-END>                      DEC-31-1995
<CASH>                                  10059
<SECURITIES>                            28299
<RECEIVABLES>                           29582
<ALLOWANCES>                             1094
<INVENTORY>                             11750
<CURRENT-ASSETS>                        87865
<PP&E>                                  59022
<DEPRECIATION>                          42141
<TOTAL-ASSETS>                         161979
<CURRENT-LIABILITIES>                   23662
<BONDS>                                   579
<COMMON>                                  645
<PREFERRED-MANDATORY>                       0
<PREFERRED>                                 0
<OTHER-SE>                             133173
<TOTAL-LIABILITY-AND-EQUITY>           161979
<SALES>                                     0
<TOTAL-REVENUES>                       134654
<CGS>                                       0
<TOTAL-COSTS>                           97887
<OTHER-EXPENSES>                        23269
<LOSS-PROVISION>                            0
<INTEREST-EXPENSE>                        428
<INCOME-PRETAX>                         17833
<INCOME-TAX>                             7138
<INCOME-CONTINUING>                     10695
<DISCONTINUED>                              0
<EXTRAORDINARY>                             0
<CHANGES>                                   0
<NET-INCOME>                            10695
<EPS-PRIMARY>                            1.64
<EPS-DILUTED>                            1.61
        

</TABLE>
